Polishing device for rolling-mills.



B. P. SWYERS.

POLISHING DEVICE FOR ROLLING MILLS. APPLICATION FILED JAN. I8, I912. 1,159,544. Patented Nov. 9, 1915.

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ZuiZnesses:

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COLUMBIA PLANOGRAPH c0.. \VASHINGTON, D. c.

B. P. SWYERS. POLISHING DEVICE FOR ROLLING MILLS. APPLICATION FILED JAN. I8. I912.

1,159,544. Patented Nov. 9,1915.

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COLUMBIA PLANOGRAPH (20., WASHINGTON. D. c.

B. P. SWYERS. POLISHING DEVICE FOR ROLLING MILLS.

APPLICATION FILEDJAN. I8, I9I2.

3 SHEETSSHEET 3.

. V J2 %Z 73 Inventor:

mdhf a 5% COLUMBIA PLANOGRAPH co.. WASHINGTON. u. c.

Patented Nov. 9, 1915.-

BRICE P. SW YER-S, 0F PITTSBURGH, PENNSYLVANIA.

POLISHING DEVICE FOR ROLLING-MILLS.

Specification of Letters Patent.

Patented Nov. 9, 1915-.

Application filed January 18, 1912. Serial No. 671,833.

To all whom it may concern Be it known that I, BRICE P. SWYnRs, a resident of Pittsburgh, South Side, inthe county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Polishing Devices for Rolling Mills; and I do hereby declare the following to be a full, clear, and eXact description thereof.

My invention relates to rolling mills, and has special reference to such mills as are used for rolling tin and thin sheets or plates of metal where it is necessary that the rolls in such mill should be kept clean and smooth in order to provide the surfaces of such sheets with a smooth and even finish.

In the ordinary tin rolling mills of the present day the hot bars are first passed through the-rolls in order to flatten the same into sheets, and this process is called the breaking down of such bars. In this first step two of the bars are laid together and flattened out into sheets so that when taken from the rolls there will be two distinct sheets of metal, several times the required thickness, and such sheets will then be taken and reheated to a cherry red so that the two sheets will not fuse or stick together when they are afterward to be separated. After being reheated the sheets are again passed through the rolls and the sheets are still lying one upon the other so that the lower sheet is in contact with the lower roll and the upper sheet in contact with the upper roll. After being taken from the rolls the sheets are bent double so that there will now be four thicknesses of the metal in each pack and these after being trimmed will be passed back into the furnace again and reheated to a cherry red. The sheets or packs of sheets are again rolled and again doubled and trimmed after being rolled, and such packs of eight sheets are now transferred to the furnace again for the final heating. After being heated to a cherry red as before, the packs of sheets are rolled to their required sizes in area and thickness in the rolls and are allowed to cool, whereupon they are trimmed and cut into sizes desired. After being cut into the desired sizes the packs of eight sheets each are separated, and this is done by simply pulling such sheets apart, and such method will give eight sheets of uniform thickness and adapted to commer cial use.

It will be readily seen that in the con tinued heating and rolling of the sheets in the rolls such rolls will gather particles of scale from these sheets, and such scale will stick to the rolls and thus tend to produce an uneven or rough surface on said rolls so that the sheets will not be smooth and regular, but will be uneven and rough in appearance and will have to be scrapped. To eliminate this disadvantage of the scale gathering on the rolls the rolls are cleaned or polished at frequent intervals with emery blocks, which process removes the scale from the rolls and thus tends to eliminate the rough or uneven surface. At the present time the fore plate upon which the sheets are laid is dropped away from the pinch of the rolls, and the roller places a pipe or bar between the upright supports of the frame and then drops a block between the bar and the faces of therolls. This block is provided with two emery faces upon the same. and one of such faces is adapted to bear against the lower roll, while the other bears against the upper roll. The roller then takes another bar and bears against the block, using the former bar between the upright supports of the frame for a fulcrum in order to get the proper leverage. The block is then moved along the rolls and. the emery tends to remove all the scale therefrom. Now it will be readily seen that this method may tend to produce an ununiform surface on the rolls on account of the different periods of time the block is kept on each particular part of the rolls so that the sheets will not be of a uniform gage or thickness, and again the rolls during the period of cleaning the same must be idle so far as regards the output of sheets from the same, and as this cleaning process must be resorted to from siX to twelve times during every turn of eight hours, and requires about three to five minutes each time, the actual loss of time is material. There is still another disadvantage in this method of cleaning the rolls, in that the roller is-not always sure of the pressure he is placing on the block and he may thus score the rolls, and such scoring will be apparent on each outside sheet which passes through the rolls so that such sheets will not present a smooth and polished finish, but will be full of scorings and will present an uneven or rough finish.

The object of my invention is to provide a cheap, simple and efficient form of rolling mill wherein the necessity of stopping work while the rolls are being cleaned will be eliminated and the cleaning process will be carried on while the sheets are being rolled,

and thus save the time which is necessarily lost during the time such cleaning is being done, as well as to provide a cleaning means wherein the rolls will be cleaned uniformly and will not be scratched or scored.

In the present approved method of cleaning and polishing the rolls while the polishing is being accomplished the machine will not be engaged in rolling sheets, so that the rolls will naturally lose some of the heat acquired from the hot sheets and will thereby contract and in a great number of cases will be caused to break by such contraction.

In my improved method of polishing the rolls there will be no contraction of the rolls, as the sheets will be passed through the rolls continuously and even during the polishing of the same.

My invention consists, generally stated, in the novel arrangement, construction and combination of parts as hereinafter more specifically set forth and described and particularly pointed out in the claims. 7

To enable others skilled in the art to which my invention appertains to construct and use my improved rolling mills for sheets and plates, I will describe the same more fully, referring to the accompanying draw ing, in which Figure 1 is a front view of my improved rolling mill for sheets and plates. Fig. 2 is a side view of thesame looking in, the direction of the arrow A in Fig. 1. Fig. 3 is a cross-sectional view of the mill on the line 3-3, Fig. 1. Fig. {f is an end view of the side arm used on the polishing device. Fig. 5 is a cross-sectional view of the polishing device used for polishing the rolls. Fig. 6 is a partial. end view of one of the slide bars on the polishing device. Fig. 7 is a partial front view of the polishing device. Fig. 8v

is an enlarged perspective view of theadjusting block. Fig. 9 is side view of the rod connecting the polishing and ratchet devices. Fig. 10 is a side view of the ratchet device. Fig. 11 is a detailed view of said ratchet device and parts connecting thereto.

Like symbols of reference herein indicate like parts in each of the figures of the drawmgs.

As illustrated in the drawings, 1 represents the rolling. mill, 'and such mill as shown is of the ordinary type and the style is that approved by the leading tin and sheet rolling mills of the present day. The mill has a bed-plate 2 upon which is located the housings 3, and such housings are adjusted to the required positions by means of screws 4: fitting into dov'etails 5 in said bed-plate. The housings are preferably very "heavy in constructionand are provided with an opening 6 in the center of the same for the admission. of the lower roll 7 and the upper roll 8 to the same, and such rolls are positioned vertically within the housings 3 and bear against the side brasses or wearing blocks 9 which are fastened to said housings in any suitable manner, such as by dovetails. At the top of the housings 3 are the housing heads 10, and below such housing heads are the riders 11, which fitwithin the openings 6 and are adapted: to rest upon the upper roll 8, while a heavy screw 12 extends downward through each of the housings heads 10, and bears against the top of such riders in order to limit the distance between the rolls 7 and 8, and thus re ulate the thickness of the sheets coming from said rolls.

At the front of the mill is a fore-plate 13, i

which is adapted to slope downward slightly toward the pinch of the rolls, and such plate is usually fastened to lugs 14 cast on the front of the housings 3 by means of arms 15 on the forward end of such plate.

The rolls 7 and 8 are each provided with a bearing portion 16 which is adapted to bear against the brasses or wearings blocks 9, and at the outer end of each of said bearing portions is a wabbler 17. Upon the wabbler 17 situated on the right hand side of the lower roll 7 is a pulley 18, which is adapted to receive a belt from any suitable source of power for turning said lower roll.

Each of the housings 3 is provided with a vertical groove 19 on the inner face of the same, and at each end of said housings. Into the rear groove 19 on the rear of each of the housings 3 is placed an anchor bar 20, and such bar is provided with an adjusting device 21 at each end of the same and as near as possible to thehousings. This adjusting device 21 consists of a body 22 which has flanges 23 extending downward and straddling the anchor bar 20, and is also provided with two upwardly extending arms 24, and a screw 25 fits revolubly into the arms 24:, and is provided'with a block 26 upon the same and between said arms. The block 26 is adapted to be regulated in position between the arms 24 by means of the screw 25, while such block has a pin 27 at the side of the same nearest to the housing 3 for the purpose to be hereinafter described.

A polishing device 28 is adapted to engage withthe rear of the rolls 7 and 8, and such device has a pair of side arms 29, which are adapted to form the outer extremities of said polishing device.

Between the side arms 29 is, the upper slide bar 30 and the lower slide bar 31, and such slide bars are provided with flanges 32 at the ends thereof for fitting into the overhanging projections 33 to hold the same together. The slide bars 30 and 31 are of channel shape, and the sides 34 of thesame ass 7 are slightly inclined inward from the rear wall 35 and toward the open edges of said bars.

At one side of each of the slide bars 30 and 31 are the screws 36 and 36 respectively, and such screws extend the entire distance between the side arms 29, and are journaled in said arms, and each of said screws is provided at the right hand end of the same with a small pinion 37, which fits into the recess 37 in the right hand side arm 29.

Each of the slide bars 30 and 31 have a projection 38 at the ends of the same, and such projection is adapted to fit into a groove 39 in the side arm 29 and rests against a flat spring 40, which is located in the recess 41 in said side arm. At one end of each of the slide bars 30 and 31 is a trap 42, which is adapted to be opened'and closed and is provided with a pivoted latch 43 for retaining the same in its closed position. The slide bars 30 and 31 are provided with carriers 4% and 44: respectively, and such carriers are of box-like form and are open at their ends,

being slightly tapered toward their forward ends, and contain an emery block 45, which block is adapted to be placed therein through the trap 42 when the carrier 44 or 44 is directly opposite the same. At one side of each carrier is an arm 46, which has a pair of flanges L7 at the end of the same for fitting over a block 48 on the screw 36 or 37, and the outer flange is provided with a recess 49 which is adapted to receive a lug 50 on said block.

The lower carrier 44: is provided with a projection 51, which has a hole 51 in the same for fitting on a reversing rod 52, and such rod is positioned at one end on the left hand side arm 29, and has a small amount of end play; while the other end is fastened to a connecting-block 53 as hereinafter described. At a position near each end of the rod 52 and secured thereto is a stop 5% which is adapted to be engaged by the projection 51 on the carrier 44', and the rod 52 thus moved in a longitudinal direction, the purpose of which will be explained hereinafter. Immediately above the upper slide bar 30 on each of the side arms 29 is a small roller 55, which can be adjusted to any desired distance from said arms in order to regulate the pressure of the emery blocks 4-5 on the rolls 7 and 8. The lower end of each of the side arms29 is provided with a slot 56 which is adapted to fit over the pin 27 on the adjusting device 21 so that the position of the said device with respect to the rolls 7 and 8 may be regulated in order to provide for the proper pressure. At the rear of each of the side arms 29 is a spiral spring 57, which is fixedly secured thereto by its one end, while the other end of the same is connected to the housing 3 in any suitable manner as by the lug 57, in order to hold the polishing device 28 away from the rolls 7 and 8 when not in use. The upper end of each of the side arms 29 is provided with a reduced. portion 58, which is adapted to fit into a slot 58 in the end of a horizontal rod 59, and such rod has a groove or notch 60 therein and beyond said slot for the purpose of receiving a heavy flat spring 61, which is attached to the arm 29 in any suitable manner, such as by small bolts or rivets.

Upon the front of each of the housings is a bar 62 which has a pair of outwardly extending portions 63 and 63, and such portions are provided with a hole Get, into which is fitted a pin 65, while the space between said outwardly extending portions is occupied by a ratchet device 66. This ratchet device 66 consists of a plate 67, which has a tooth 68 thereon and has securely fixed to its upper face a set of teeth 69, while above the same is a lever 70, which is adapted to be rotated on the pin 65, and said lever may engage between any of the teeth 69, and thus regulate the position of the tooth 68 on the plate 67. Secured to the forward end of the horizontal rod 59 is a chain 71, which is adapted to be passed over the tooth 68 on the plate 67 of the ratchet device 66 by any one of its several links, and the lever 7 0 above said device is then caused to engage with the desired teeth on the said plate, whereupon the lever is then turned so as to cause the same to rest against the bar 62, and said lever is then held in such position by means of the latch 72, which engages with the said lever and prevents its escaping from such position.

Upon the right hand housing 3 at the rear thereof and at a position opposite the pinch of the rolls 7 and 8 is a ring 73 which has a pair of bearings 74 at the forward end there of, and such bearings contain a shaft 75 which has a gear 76 at the inner end of the same, and said gear is adapted to engage with the two pinions 37 on the screws 36 and 36' to rotate the same, and thus move the carriers 44 and 44: along in their respective slides.

At the outer end of the shaft 75 is a pair of pulleys 77, and said pulleys are connected in the usual manner to any suitable source of power to rotate the same in opposite directions, while such pulleys are free to rotate on said shaft and are not secured thereto. That portion of the shaft 75 between the pulleys 77 is provided with a projecting lip 78, and said portion of the shaft 77 has a clutch member 79 thereon which is adapted to move horizontally on said shaft. and said clutch mav be moved by the lever 80 so as to engage with the teeth 81 on either of the pulleys 77 so as to cause the shaft 75 to rotate thereby.

A supporting bar 32' is secured to the right hand housing 3 at the bottom thereof,

and such bar extends upward and has a horizontal portion-S2 thereon, such portion being in a line with the shaft 75, and having a notch 83 in the same for maintaining the lever in its central position, while said lever is pivoted into an arm 8 L which extends outwardly from the ring 73 on the housing The inner end of the lever 80 is provided with a fork which is adapted to straddle the clutch member 79 in order to operate the same by the movement of said lever.

The free end of the reversing rod 52 is secured in any suitable manner to the connecting block 53. The block 53 is attached to one end of a horizontal rod 86, which extends longitudinally of the mill-rolls and is slidably mounted in a bearing secured to a band 73 carried by the standard 3 below the bearings 74. The end of the rod 86 remote from the block 53 is bent so as to clear the pulley 77, and is provided at its extremity with a vertically disposed fork 88, the prongs of which engage against each side of the lever 80. It will be seen that when the reversing rod 52, and consequently the rod 86, is shifted in one direction or the other, it will cause a corresponding rocking of the lever 80, thereby causing the clutch member 79 to break its connection in one direction or the other.

The operation of my improved polishing device is as follows :-The mill is presumed to be running at its regular speed and the sheets are being rolled as before explained, and it is desired that the rolls be polished, as the same have become coated with scale and are thus causing an uneven finish on the sheets rolled. he operator will then throw the lever 80 so as to cause the clutch member 79 to engage with the teeth 81 on either one of the pulleys 79 according to the direction of rotation required, and such pulley being driven by the belt (not shown) from the source of power, will thus cause the clutch 79 to revolve, and the shaft 75 being secured thereto will also revolve. The rotating of the shaft 75 will cause the gear 7 6 secured to the inner end of the same to be revolved thereby, and this operation is all caused by throwing the lever 80 as explained. The polishing device 28 is now brought toward the rolls by the operator drawing forward the horizontal rod 59 and thus placing tension on the spiral springs 57. This is accomplished by throwing the lever 7 O to a position against the side of the housing 3 and locking the same by means of the latch 72 which engages with the said lever and prevents the same from escaping. The lever 70 may be engaged with any teeth desired on the ratchet device 66, and thus the pressure of the emery blocks 45 on the rolls 7 and 8 regulated as desired, although the rollers 55 on the side arms 29 tend to control the pressure of such blocks; on the rolls as the limit of, pressure is regulated thereby.

lVhen the gear 76 is caused to rotate, as explained, the drawing forward of the polishing device 28 will bring the pinions 37 in the recess 37 ofthe side arms 29 into mesh with said gear, and the pinions will thus be rotated, and in consequence thereof the screws 36 and 36 fixedly secured to said pinions will also be caused to rotate. When the screws 36 and 36 are rotated, such motion will move the carriers la and as in the slide bars 30 and 31, respectively, along in such slides, and thus they will travel the entire distance across the face of the rolls 7 and 8, and the emery blocks as will bear against said rolls to polish the same. l/Vhen the carriers is and eel, which are so arranged as to always travel in line with each other, have reached a point near the end of the rolls 7 and 8 the projection 51 on the lower carrier 44-" will strike against the stop 54: on the reversing rod 52, and thus push said rod in the direction of its travel. This movement of the reversing rod 52 will draw the rod 86 with it, and as such rod connects with the operating lever 80 by means of its forked end 88, the forward end of said lever will be pushed over and will slide into the notch 83 on the resting bar 82, while the clutch member 79 will be drawn to its central position and thus disengaged from the pulley 77, when said pulley will be free to rotate on the shaft 7 5, as explained.

The lever 80 is now thrown in the opposite direction from that first explained, and the clutch member 79 will engage with the teeth on the other pulley 77 which is rotating in the opposite direction to the first named pulley, and the carriers ll and A are now caused to move backward in the slide bars 30 and 31 in the manner before explained. When the cleaning or polishing of the rolls 7 and 8 is thus accomplished the lever 70 is released by raising the latches 72 and thus allowing the ratchet device 66 to rotate and release the chains 71 connecting with the horizontal rods 59, whereupon the springs 57 will draw the polishing device 28 away from the rolls. The heavy flat spring 61 is adapted to allow the polishing device 28 to be pressed back from the rolls 1n order to prevent the same from being distorted when the roll breaks from contracq tion, which is less likely to happen with this method of polishing the rolls, as before explained.

It will readily be seen that, with the use of my improved polishing device, the mill need never be shut downin order to clean the rolls of the same, as the mechanism of such device does not interfere with the rolling of the plates, This is a particular feature of my invention in that when the mill is shut down for cleaning, in the ordinary method now practised, the rolls become chilled and often break thus causing great expense beside the danger of loss of life or serious injury to the workmen engaged about the mill. In addition the regular and even action of the emery blocks on the rolls will give a smooth and regular surface so that the sheets coming from such a mill will be smooth and polished.

This apparatus may be applied as shown, to any of the approved type of mills now in operation, and its cost will be slight as compared with the amount of time and labor expended in the present method of polishing the rolls and as compared with the cost of replacing a broken roll its'installation will seem insignificant.

Various modifications and changes in the design and construction of my improved rolling mill for sheets may be resorted to within the scope of the appended claims.

What I claim as my invention and desire to secure by Letters Patent is:

1. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon for polishing the rolls of the same, said arms being adjustable toward and away from said rolls, and means for securing said arms in a position wherein saidfirst named means bears against said rolls.

2. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon adapted to travel across said roll to polish the same, said arms being adjustable toward and away from said rolls, and means for securing said arms in a position wherein said first named means bears against said rolls.

3. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and means carried thereby for polishing the rolls of the same, said means being yieldably mounted on said arms, said arms being adjustable toward and away from said rolls, and means for securing said arms in a position wherein said first named means bear against said rolls.

4. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon adapted to travel across said rolls to polish the same, said means being yieldably mounted on said arms, said arms being adjustable toward and away from said rolls, and means for securing said arms in a position wherein said first named means bear against said rolls.

5. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon tor polishing the rolls of the same, said arms being adjustable toward and away from said rolls, and a ratchet device for securing said arms in a position wherein said means bears against said rolls.

6. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon for polishing the rolls of the same, said arms being pivoted at their lower ends and being ad ustable toward and away from said rolls, and means for securing said arms in a position wherein said first named means bear against said rolls.

7. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means thereon for polishing the rolls of the same, said arms being pivoted at their lower ends and being adjustable toward and away from said rolls, said means being adapted to travel across said rolls and to be automatically reversed when reching the end of the same, said means be ing yieldably mounted on said arms, and means for securing said arms in a position wherein said first named means bears against said rolls.

8. A device for cleaning rolling mill rolls comprising side arms mounted on said mill, means for polishing the rolls of the same, said arms being yieldingly mounted on said mill and being adjustable toward and away from said rolls, and means for securing said arms in a position wherein said first named means bear yieldingly against said rolls.

9. A device for cleaning rolling mill rolls comprising side arms mounted on said mill and carrying means for polishing the rolls of the same, said arms being yieldingly mounted on said mill and being adjustable toward and away from said rolls, and a ratchet device for securing said arms in a position wherein said means bear yieldingly against said rolls. I

In testimony whereof, I, the said Bnron P. SwYERs, have hereunto set my hand.

BEIGE P. SWYERS.

Witnesses:

A. D. P. MILLER, T. B. HUMPHRIES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

